Camera optical lens

ABSTRACT

The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens made of a plastic material; a second lens made of a plastic material; a third lens made of a glass material; a fourth lens made of a glass material; a fifth lens made of a plastic material; a sixth lens made of a plastic material; and a seventh lens made of a plastic material. The camera optical lens satisfies following conditions: 1.50≤f1/f≤2.50; 1.70≤n3≤2.20; −2.00≤f3/f4≤2.00; 1.00≤(R13+R14)/(R13−R14)≤10.00; and 1.70≤n4≤2.20. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and moreparticularly, to a camera optical lens suitable for handheld terminaldevices, such as smart phones or digital cameras, and imaging devices,such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lenses with good imaging quality therefore have become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. Also, with the development oftechnology and the increase of the diverse demands of users, and as thepixel area of photosensitive devices is becoming smaller and smaller andthe requirement of the system on the imaging quality is improvingconstantly, the five-piece, six-piece and seven-piece lens structuresgradually appear in lens designs. There is an urgent need forultra-thin, wide-angle camera lenses with good optical characteristicsand fully corrected chromatic aberration.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9; and

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DESCRIPTION OF EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

Referring to FIG. 1, the present disclosure provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment1 of the present disclosure. The camera optical lens 10 includes 7lenses. Specifically, the camera optical lens 10 includes, from anobject side to an image side, an aperture Si, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixthlens L6 and a seventh lens L7. An optical element such as an opticalfilter GF can be arranged between the seventh lens L7 and an image planeSi.

The first lens L1 is made of a plastic material, the second lens L2 ismade of a plastic material, the third lens L3 is made of a glassmaterial, the fourth lens L4 is made of a glass material, the fifth lensL5 is made of a plastic material, the sixth lens L6 is made of a plasticmaterial, and the seventh lens L7 is made of a plastic material.

Here, a focal length of the camera optical lens 10 is defined as f, anda focal length of the first lens L1 is defined as f1. The camera opticallens 10 should satisfy a condition of 1.50≤f1/f≤2.50, which specifies aratio of the focal length f1 of the first lens L1 and the focal length fof the camera optical lens 10. If the lower limit of the specified valueis exceeded, although it would facilitate development of ultra-thinlenses, the positive refractive power of the first lens L1 will be toostrong, and thus it is difficult to correct the problem like anaberration and it is also unfavorable for development of wide-anglelenses. On the contrary, if the upper limit of the specified value isexceeded, the positive refractive power of the first lens L1 wouldbecome too weak, and it is then difficult to develop ultra-thin lenses.Preferably, 1.50f1/f2.08.

A refractive index of the third lens L3 is defined as n3, where1.70≤n3≤2.20, which specifies the refractive index of the third lens L3.The refractive index within this range facilitates development ofultra-thin lenses, and also facilitates correction of the aberration.Preferably, 1.78≤n3≤2.12.

A refractive index of the fourth lens L4 is defined as n4, where1.70≤n4≤2.2, which specifies the refractive index of the fourth lens L4.The refractive index within this range facilitates development ofultra-thin lenses, and also facilitates correction of the aberration.Preferably, 1.72≤n4≤2.01.

A focal length of the third lens L3 is defined as f3, and a focal lengthof the fourth lens L4 is defined as f4. The camera optical lens 10should satisfy a condition of −2.00≤f3/f4≤2.00, which specifies a ratioof the focal length f3 of the third lens L3 and the focal length f4 ofthe fourth lens L4. This can effectively reduce the sensitivity ofoptical lens group used in the camera and further enhance the imagingquality. Preferably, −2.00≤f3/f4≤0.15.

A curvature radius of an object side surface of the seventh lens L7 isdefined as R13, and a curvature radius of an image side surface of theseventh lens L7 is defined as R14. The camera optical lens 10 furthersatisfies a condition of 1.00≤(R13+R14)/(R13−R14)≤10.00, which specifiesa shape of the seventh lens L7. Out of this range, a development towardsultra-thin and wide-angle lenses would make it difficult to correct theproblem like an off-axis aberration. Preferably,1.56≤(R13+R14)/(R13−R14)≤6.10.

A total optical length from an object side surface of the first lens L1to an image plane of the camera optical lens 10 along an optic axis isdefined as TTL. When the focal length of the camera optical lens, thefocal length of the first lens, the focal length of the third lens, thefocal length of the fourth lens, the refractive index of the third lens,the refractive index of the fourth lens, the curvature radius of theobject side surface of the seventh lens and the curvature radius of theimage side surface of the seventh lens satisfy the above conditions, andthe camera optical lens will have the advantage of high performance andsatisfy the design requirement of a low TTL.

In this embodiment, the object side surface of the first lens L1 isconvex in a paraxial region, an image side surface of the first lens L1is concave in the paraxial region, and the first lens L1 has a positiverefractive power.

A curvature radius of the object side surface of the first lens L1 isdefined as R1, and a curvature radius of the image side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 furthersatisfies a condition of −3.72≤(R1+R2)/(R1−R2)≤−1.08. This canreasonably control a shape of the first lens L1 in such a manner thatthe first lens L1 can effectively correct a spherical aberration of thecamera optical lens. Preferably, −2.32≤(R1+R2)/(R1−R2)≤−1.35.

An on-axis thickness of the first lens L1 is defined as d1. The cameraoptical lens 10 further satisfies a condition of 0.03≤d1/TTL≤0.10. Thisfacilitates achieving ultra-thin lenses. Preferably, 0.05≤d1/TTL≤0.08.

In this embodiment, an object side surface of the second lens L2 isconvex in the paraxial region, an image side surface of the second lensL2 is convex in the paraxial region, and the second lens L2 has apositive refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the second lens L2 is f2. The camera optical lens 10 furthersatisfies a condition of 1.08≤f2/f≤3.71. By controlling the positiverefractive power of the second lens L2 within the reasonable range,correction of the aberration of the optical system can be facilitated.Preferably, 1.74≤f2/f≤2.97.

A curvature radius of the object side surface of the second lens L2 isdefined as R3, and a curvature radius of the image side surface of thesecond lens L2 is defined as R4. The camera optical lens 10 furthersatisfies a condition of −0.34≤(R3+R4)/(R3−R4)≤−0.04, which specifies ashape of the second lens L2. Out of this range, a development towardsultra-thin and wide-angle lenses would make it difficult to correct theproblem of aberration. Preferably, −0.21≤(R3+R4)/(R3−R4)≤−0.05.

An on-axis thickness of the second lens L2 is defined as d3. The cameraoptical lens 10 further satisfies a condition of d3/TTL≤0.13. Thisfacilitates achieving ultra-thin lenses. Preferably, 0.07≤d3/TTL≤0.11.

In this embodiment, an object side surface of the third lens L3 isconvex in the paraxial region, an image side surface of the third lensL3 is concave in the paraxial region, and the third lens L3 has anegative refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the third lens L3 is f3. The camera optical lens 10 further satisfiesa condition of −4.69≤f3/f≤−1.36. When the condition is satisfied, thefield curvature of the system can be effectively balanced for furtherimproving the image quality. Preferably, −2.93≤f3/f≤1.69.

A curvature radius of the object side surface of the third lens L3 isdefined as R5, and a curvature radius of the image side surface of thethird lens L3 is defined as R6. The camera optical lens 10 furthersatisfies a condition of 2.33≤(R5+R6)/(R5−R6)≤8.76. This can effectivelycontrol a shape of the third lens L3, thereby facilitating shaping ofthe third lens L3 and avoiding bad shaping and generation of stress dueto the overly large surface curvature of the third lens L3. Preferably,3.73≤(R5+R6)/(R5−R6)≤7.01.

An on-axis thickness of the third lens L3 is defined as d5. The cameraoptical lens 10 further satisfies a condition of 0.01≤d5/TTL≤0.04. Thisfacilitates achieving ultra-thin lenses. Preferably, 0.02≤d5/TTL≤0.03.

In this embodiment, an object side surface of the fourth lens L4 isconcave in the paraxial region, an image side surface of the fourth lensL4 is convex in the paraxial region, and the fourth lens L4 has apositive refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the fourth lens L4 is f4. The camera optical lens 10 furthersatisfies a condition of 0.51≤f4/f≤1.80. The appropriate distribution ofthe refractive power leads to a better imaging quality and a lowersensitivity. Preferably, 0.81≤f4/f≤1.44.

A curvature radius of the object side surface of the fourth lens L4 isdefined as R7, and a curvature radius of the image side surface of thefourth lens L4 is defined as R8. The camera optical lens 10 furthersatisfies a condition of 0.63≤(R7+R8)/(R7−R8)≤2.13, which specifies ashape of the fourth lens L4. Out of this range, a development towardsultra-thin and wide-angle lenses would make it difficult to correct theproblem like an off-axis aberration. Preferably,1.01≤(R7+R8)/(R7−R8)≤1.70.

An on-axis thickness of the fourth lens L4 is defined as d7. The cameraoptical lens 10 further satisfies a condition of 0.06≤d7/TTL≤0.20. Thisfacilitates achieving ultra-thin lenses. Preferably, 0.10≤d7/TTL≤0.16.

In this embodiment, an object side surface of the fifth lens L5 isconcave in the paraxial region, an image side surface of the fifth lensL5 is convex in the paraxial region, and the fifth lens L5 has anegative refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the fifth lens L5 is f5. The camera optical lens 10 further satisfiesa condition of −5.28≤f5/f≤1.10. This can effectively make a light angleof the camera lens gentle and reduce the tolerance sensitivity.Preferably, −1.37.

A curvature radius of the object side surface of the fifth lens L5 isdefined as R9, and a curvature radius of the image side surface of thefifth lens L5 is defined as R10. The camera optical lens 10 furthersatisfies a condition of −12.53≤(R9+R10)/(R9−R10)≤−2.66, which specifiesa shape of the fifth lens L5. Out of this range, a development towardsultra-thin and wide-angle lenses would make it difficult to correct theproblem like an off-axis aberration. Preferably,−7.83≤(R9+R10)/(R9−R10)≤−3.33.

An on-axis thickness of the fifth lens L5 is defined as d9. The cameraoptical lens 10 further satisfies a condition of 0.02≤d9/TTL≤0.09. Thisfacilitates achieving ultra-thin lenses. Preferably, 0.04≤d9/TTL≤0.07.

In this embodiment, an object side surface of the sixth lens L6 isconvex in the paraxial region, an image side surface of the sixth lensL6 is concave in the paraxial region, and the sixth lens L6 has apositive refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the sixth lens L6 is f6. The camera optical lens 10 further satisfiesa condition of 1.91≤f6/f≤7.95. The appropriate distribution of therefractive power leads to a better imaging quality and a lowersensitivity. Preferably, 3.05≤f6/f≤6.36.

A curvature radius of the object side surface of the sixth lens L6 isdefined as R11, and a curvature radius of the image side surface of thesixth lens L6 is defined as R12. The camera optical lens 10 furthersatisfies a condition of −28.55≤(R11+R12)/(R11−R12)≤−5.07, whichspecifies a shape of the sixth lens L6. Out of this range, a developmenttowards ultra-thin and wide-angle lenses would make it difficult tocorrect the problem like an off-axis aberration. Preferably,−17.84≤(R11+R12)/(R11−R12)≤−6.34.

A thickness on-axis of the sixth lens L6 is defined as d11. The cameraoptical lens 10 further satisfies a condition of 0.05≤d11/TTL≤0.15. Thisfacilitates achieving ultra-thin lenses. Preferably, 0.08≤d11/TTL≤0.12.

In this embodiment, an object side surface of the seventh lens L7 isconvex in the paraxial region, an image side surface of the seventh lensL7 is concave in the paraxial region, and the seventh lens L7 has anegative refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the seventh lens L7 is f7. The camera optical lens 10 furthersatisfies a condition of −2.91≤f7/f≤−0.96. The appropriate distributionof the refractive power leads to a better imaging quality and a lowersensitivity. Preferably, −1.19.

An on-axis thickness of the seventh lens L7 is defined as d13. Thecamera optical lens 10 further satisfies a condition of0.06≤d13/TTL≤0.19. This facilitates achieving ultra-thin lenses.Preferably, 0.09≤d13/TTL≤0.15.

In this embodiment, the total optical length TTL of the camera opticallens 10 is smaller than or equal to 5.89 mm, which is beneficial forachieving ultra-thin lenses. Preferably, the total optical length TTL ofthe camera optical lens 10 is smaller than or equal to 5.62 mm.

In this embodiment, an F number of the camera optical lens 10 is smallerthan or equal to 1.71. The camera optical lens 10 has a large F numberand a better imaging performance. Preferably, the F number of the cameraoptical lens 10 is smaller than or equal to 1.68.

With such design, the total optical length TTL of the camera opticallens 10 can be made as short as possible, and thus the miniaturizationcharacteristics can be maintained.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object sidesurface of the first lens to the image plane of the camera optical lensalong the optic axis) in mm.

Preferably, inflexion points and/or arrest points can be arranged on theobject side surface and/or image side surface of the lens, so as tosatisfy the demand for the high quality imaging. The description belowcan be referred to for specific implementations.

The design information of the camera optical lens 10 in Embodiment 1 ofthe present disclosure is shown in Tables 1 and 2.

TABLE 1 R d nd vd S1 ∞ d0 = −0.144 R1 2.415 d1 = 0.351 nd1 1.5467 v155.82 R2 10.229 d2 = 0.025 R3 8.680 d3 = 0.469 nd2 1.5464 v2 55.93 R4−12.252 d4 = 0.028 R5 3.382 d5 = 0.152 nd3 1.8555 v3 23.70 R6 2.189 d6 =0.462 R7 −24.223 d7 = 0.708 nd4 1.8177 v4 41.04 R8 −2.824 d8 = 0.148 R9−1.439 d9 = 0.253 nd5 1.6417 v5 23.97 R10 −2.399 d10 = 0.281 R11 2.328d11 = 0.538 nd6 1.5464 v6 55.93 R12 3.032 d12 = 0.535 R13 4.844 d13 =0.620 nd7 1.5371 v7 55.69 R14 1.739 d14 = 0.300 R15 ∞ d15 = 0.210 ndg1.5168 vg 64.17 R16 ∞ d16 = 0.197 In the table, meanings of varioussymbols will be described as follows. S1: aperture; R: curvature radiusof an optical surface, a central curvature radius for a lens; R1:curvature radius of the object side surface of the first lens L1; R2:curvature radius of the image side surface of the first lens L1; R3:curvature radius of the object side surface of the second lens L2; R4:curvature radius of the image side surface of the second lens L2; R5:curvature radius of the object side surface of the third lens L3; R6:curvature radius of the image side surface of the third lens L3; R7:curvature radius of the object side surface of the fourth lens L4; R8:curvature radius of the image side surface of the fourth lens L4; R9:curvature radius of the object side surface of the fifth lens L5; R10:curvature radius of the image side surface of the fifth lens L5; R11:curvature radius of the object side surface of the sixth lens L6; R12:curvature radius of the image side surface of the sixth lens L6; R13:curvature radius of the object side surface of the seventh lens L7; R14:curvature radius of the image side surface of the seventh lens L7; R15:curvature radius of an object side surface of the optical filter GF;R16: curvature radius of an image side surface of the optical filter GF;d: on-axis thickness of a lens and an on-axis distance between lenses;d0: on-axis distance from the aperture S1 to the object side surface ofthe first lens L1; d1: on-axis thickness of the first lens L1; d2:on-axis distance from the image side surface of the first lens L1 to theobject side surface of the second lens L2; d3: on-axis thickness of thesecond lens L2; d4: on-axis distance from the image side surface of thesecond lens L2 to the object side surface of the third lens L3; d5:on-axis thickness of the third lens L3; d6: on-axis distance from theimage side surface of the third lens L3 to the object side surface ofthe fourth lens L4; d7: on-axis thickness of the fourth lens L4; d8:on-axis distance from the image side surface of the fourth lens L4 tothe object side surface of the fifth lens L5; d9: on-axis thickness ofthe fifth lens L5; d10: on-axis distance from the image side surface ofthe fifth lens L5 to the object side surface of the sixth lens L6; d11:on-axis thickness of the sixth lens L6; d12: on-axis distance from theimage side surface of the sixth lens L6 to the object side surface ofthe seventh lens L7; d13: on-axis thickness of the seventh lens L7; d14:on-axis distance from the image side surface of the seventh lens L7 tothe object side surface of the optical filter GF; d15: on-axis thicknessof the optical filter GF; d16: on-axis distance from the image sidesurface of the optical filter GF to the image plane; nd: refractiveindex of d line; nd1: refractive index of d line of the first lens L1;nd2: refractive index of d line of the second lens L2; nd3: refractiveindex of d line of the third lens L3; nd4: refractive index of d line ofthe fourth lens L4; nd5: refractive index of d line of the fifth lensL5; nd6: refractive index of d line of the sixth lens L6; nd7:refractive index of d line of the seventh lens L7; ndg: refractive indexof d line of the optical filter GF; vd: abbe number; v1: abbe number ofthe first lens L1; v2: abbe number of the second lens L2; v3: abbenumber of the third lens L3; v4: abbe number of the fourth lens L4; v5:abbe number of the fifth lens L5; v6: abbe number of the sixth lens L6;v7: abbe number of the seventh lens L7; vg: abbe number of the opticalfilter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 inEmbodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10A12 A14 A16 A18 A20 R1 −1.2630E+00 −2.8947E−02  6.8829E−03 −8.1703E−02 8.5992E−02 −5.5136E−02  2.1741E−02 −2.6063E−03  3.5239E−04 −4.7734E−04R2 −2.6400E+02 −1.3812E−02 −6.6377E−03 −2.6101E−03  4.8771E−04 1.1919E−03  1.1838E−03  7.1659E−04  5.2310E−05 −4.7139E−04 R3 4.6429E+01  1.0465E−02  1.5350E−02  1.0339E−02 −1.6561E−03 −5.0912E−03−2.4192E−03  1.3109E−03  1.8966E−03 −7.7391E−04 R4 −9.0275E+02−5.6678E−02  1.2012E−01 −1.7369E−01  1.1905E−01 −4.3712E−02  1.2106E−02−2.4159E−03 −1.5771E−03  1.4232E−03 R5 −6.7808E+00 −1.4487E−01 2.4275E−01 −3.1731E−01  2.7999E−01 −1.6376E−01  5.5808E−02 −6.7453E−03 1.0601E−03 −1.3383E−03 R6  2.0328E+00 −1.9234E−01  2.5354E−01−3.8590E−01  4.5011E−01 −3.6139E−01  1.5589E−01 −2.2925E−02  1.3163E−03−2.9922E−03 R7 −3.9086E+02 −5.0725E−02  1.7089E−02 −3.2917E−02 2.2824E−02 −1.6289E−02  3.4769E−03  6.2375E−05  6.3225E−04  2.9816E−04R8  1.8144E+00 −7.7173E−02  5.0093E−02 −5.9973E−02  2.7589E−02 1.1511E−02 −1.5938E−02 4.7363E−03  8.8703E−05 −2.3203E−04 R9−4.9123E−01  6.6116E−02  2.3074E−04 −9.9475E−02  1.3332E−01 −6.2312E−02 1.1001E−02 −1.9016E−04  6.3043E−05 −1.0348E−04 R10 −8.2795E−02 8.6451E−02 −9.3653E−02  7.5985E−02 −3.6306E−02  1.1740E−02 −1.7948E−03 5.3257E−05 −5.5241E−05  1.8325E−05 R11 −1.6475E+01  7.5616E−02−1.1559E−01  6.5455E−02 −2.8186E−02  6.3426E−03 −4.7711E−04  7.0704E−07−5.7363E−07 −3.8580E−07 R12 −2.5137E+01  5.5594E−02 −4.2435E−02 8.5788E−03 −5.6567E−04  1.4588E−05 −3.1140E−06 −2.4980E−08  1.3688E−08 2.7462E−09 R13  4.4857E−01 −2.1494E−01  8.0560E−02 −1.4767E−02 1.4004E−03 −3.9188E−05 −4.2132E−06  2.8405E−07  3.4649E−09 −2.8711E−10R14 −6.9985E−01 −1.9262E−01  8.0986E−02 −2.7516E−02  6.1176E−03−8.3001E−04  6.5113E−05 −2.8345E−06  7.6845E−08 −1.8182E−09

Here, K is a conic coefficient, and A4, A6, A8, A10, A12, A14, A16, A18and A20 are aspheric surface coefficients.

IH: Image Heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹²+14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 10 according toEmbodiment 1 of the present disclosure. P1R1 and P1R2 represent theobject side surface and the image side surface of the first lens L1,P2R1 and P2R2 represent the object side surface and the image sidesurface of the second lens L2, P3R1 and P3R2 represent the object sidesurface and the image side surface of the third lens L3, P4R1 and P4R2represent the object side surface and the image side surface of thefourth lens L4, P5R1 and P5R2 represent the object side surface and theimage side surface of the fifth lens L5, P6R1 and P6R2 represent theobject side surface and the image side surface of the sixth lens L6, andP7R1 and P7R2 represent the object side surface and the image sidesurface of the seventh lens L7. The data in the column named “inflexionpoint position” refers to vertical distances from inflexion pointsarranged on each lens surface to the optic axis of the camera opticallens 10. The data in the column named “arrest point position” refers tovertical distances from arrest points arranged on each lens surface tothe optic axis of the camera optical lens 10.

TABLE 3 Number of Inflexion Inflexion Inflexion Inflexion inflexionpoint point point point points position 1 position 2 position 3 position4 P1R1 1 0.725 P1R2 2 0.485 1.035 P2R1 0 P2R2 1 1.045 P3R1 1 0.685 P3R20 P4R1 1 1.155 P4R2 0 P5R1 2 1.035 1.265 P5R2 1 1.065 P6R1 2 0.725 1.675P6R2 4 0.905 1.945 2.295 2.405 P7R1 2 0.305 1.445 P7R2 2 0.625 2.665

TABLE 4 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 1 0.835 P2R1 0 P2R2 1 1.165 P3R1 0 P3R2 0 P4R1 0P4R2 0 P5R1 0 P5R2 1 1.475 P6R1 1 1.155 P6R2 1 1.455 P7R1 2 0.535 2.255P7R2 2 1.405 3.075

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 436 nm, 486 nm, 546 nm, 588 nm and656 nm after passing the camera optical lens 10 according toEmbodiment 1. FIG. 4 illustrates a field curvature and a distortion oflight with a wavelength of 546 nm after passing the camera optical lens10 according to Embodiment 1, in which a field curvature S is a fieldcurvature in a sagittal direction and T is a field curvature in atangential direction.

Table 13 shows various values of Embodiments 1, 2 and 3 and valuescorresponding to parameters which are specified in the above conditions.

As shown in Table 13, Embodiment 1 satisfies the above conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 2.2815 mm. The image height of 1.0H is 3.475 mm. The FOV (fieldof view) is 83.39°. Thus, the camera optical lens has a wide-angle andis ultra-thin. Its on-axis and off-axis chromatic aberrations are fullycorrected, thereby achieving excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd vd S1 ∞ d0 = −0.143 R1 2.470 d1 = 0.333 nd1 1.5467 v155.82 R2 9.099 d2 = 0.025 R3 8.804 d3 = 0.460 nd2 1.5464 v2 55.93 R4−12.062 d4 = 0.036 R5 3.132 d5 = 0.152 nd3 1.9161 v3 21.20 R6 2.216 d6 =0.465 R7 −16.864 d7 = 0.714 nd4 1.7667 v4 48.50 R8 −2.931 d8 = 0.190 R9−1.439 d9 = 0.306 nd5 1.6417 v5 23.97 R10 −2.104 d10 = 0.214 R11 2.326d11 = 0.542 nd6 1.5464 v6 55.93 R12 2.840 d12 = 0.520 R13 4.677 d13 =0.640 nd7 1.5371 v7 55.69 R14 1.736 d14 = 0.300 R15 ∞ d15 = 0.210 ndg1.5168 vg 64.17 R16 ∞ d16 = 0.242

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10A12 A14 A16 A18 A20  R1 −1.3461E+00 −2.9488E−02  7.7249E−03 −8.0998E−02 8.6456E−02 −5.4963E−02  2.1693E−02 −2.7122E−03  3.0200E−04 −4.0519E−04 R2 −2.0964E+02 −1.2696E−02 −6.0635E−03 −2.2748E−03  5.6639E−04 1.1781E−03  1.2316E−03  8.2447E−04  1.7370E−04 −4.5491E−04  R3 4.6599E+01  9.6633E−03  1.4375E−02  9.5557E−03 −1.8753E−03 −5.0349E−03−2.3859E−03  1.2842E−03  1.9546E−03 −6.3974E−04  R4 −8.5429E+02−5.4522E−02  1.2086E−01 −1.7405E−01  1.1851E−01 −4.4038E−02  1.2106E−02−2.3377E−03 −1.5139E−03  1.3812E−03  R5 −5.4928E+00 −1.4234E−01 2.4425E−01 −3.1633E−01  2.8047E−01 −1.6349E−01  5.6076E−02 −6.4947E−03 1.1339E−03 −1.6100E−03  R6  2.0236E+00 −1.9457E−01  2.5252E−01−3.8588E−01  4.5081E−01 −3.6061E−01  1.5638E−01 −2.2758E−02  1.3048E−03−2.9666E−03  R7 −7.0066E+00 −5.6750E−02  1.2497E−02 −3.4124E−02 2.3046E−02 −1.5805E−02  3.8422E−03  1.4946E−04  6.8027E−04  4.7725E−04 R8  1.8302E+00 −7.7244E−02  4.9733E−02 −6.0155E−02  2.7652E−02 1.1631E−02 −1.5860E−02  4.7698E−03  9.5992E−05 −2.3862E−04  R9−5.1171E−01  6.8231E−02  6.3359E−04 −9.9359E−02  1.3320E−01 −6.2414E−02 1.0962E−02 −1.9125E−04  7.5327E−05 −8.9959E−05 R10 −7.0238E−03 8.5171E−02 −9.4194E−02  7.5907E−02 −3.6170E−02  1.1823E−02 −1.7686E−03 5.5897E−05 −5.7424E−05  1.7038E−05 R11 −1.5343E+01  7.1947E−02−1.1580E−01  6.5333E−02 −2.8237E−02  6.3254E−03 −4.8435E−04  1.1005E−07−2.3872E−07 −2.0033E−07 R12 −2.2522E+01  5.3617E−02 −4.2261E−02 8.6092E−03 −5.6228E−04  1.4247E−05 −3.1879E−06 −3.1080E−08  1.3498E−08 2.6697E−09 R13  5.4790E−01 −2.1457E−01  8.0540E−02 −1.4781E−02 1.3997E−03 −3.9200E−05 −4.2106E−06  2.8469E−07  3.5470E−09 −2.8582E−10R14 −7.0008E−01 −1.9163E−01  8.0865E−02 −2.7526E−02  6.1194E−03−8.2993E−04  6.5103E−05 −2.8361E−06  7.6766E−08 −1.8037E−09

Table 7 and table 8 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 20 according toEmbodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 1 0.725 P1R2 20.505 0.985 P2R1 0 0 P2R2 1 1.055 P3R1 1 1.095 P3R2 0 0 P4R1 1 1.125P4R2 0 0 P5R1 2 1.025 1.285 P5R2 1 1.125 P6R1 2 0.715 1.705 P6R2 3 0.8951.935 2.235 P7R1 2 0.305 1.435 P7R2 2 0.635 2.685

TABLE 8 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 2 0.925 1.025 P2R1 0 P2R2 1 1.175 P3R1 0 P3R2 0P4R1 0 P4R2 0 P5R1 0 P5R2 1 1.555 P6R1 1 1.135 P6R2 1 1.455 P7R1 2 0.5452.225 P7R2 2 1.425 3.075

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 436 nm, 486 nm, 546 nm, 588 nm and656 nm after passing the camera optical lens 20 according to Embodiment2. FIG. 8 illustrates a field curvature and a distortion of light with awavelength of 546 nm after passing the camera optical lens 20 accordingto Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 2.3064 mm. The image height of 1.0H is 3.475 mm. The FOV (fieldof view) is 82.68°. Thus, the camera optical lens has a wide-angle andis ultra-thin. Its on-axis and off-axis chromatic aberrations are fullycorrected, thereby achieving excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd vd S1 ∞ d0 = −0.140 R1 2.517 d1 = 0.316 nd1 1.5467 v155.82 R2 8.386 d2 = 0.025 R3 8.546 d3 = 0.463 nd2 1.5464 v2 55.93 R4−9.746 d4 = 0.062 R5 3.143 d5 = 0.152 nd3 2.0302 v3 21.50 R6 2.216 d6 =0.471 R7 −21.370 d7 = 0.663 nd4 1.7466 v4 49.30 R8 −3.021 d8 = 0.201 R9−1.422 d9 = 0.294 nd5 1.6417 v5 23.97 R10 −1.963 d10 = 0.223 R11 2.266d11 = 0.523 nd6 1.5464 v6 55.93 R12 2.607 d12 = 0.528 R13 4.617 d13 =0.667 nd7 1.5371 v7 55.69 R14 1.725 d14 = 0.300 R15 ∞ d15 = 0.210 ndg1.5168 vg 64.17 R16 ∞ d16 = 0.257

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 A12 A14 A16 A18 A20 R1 −1.4256E+00 −3.0041E−02  7.8446E−03−8.0474E−02  8.6857E−02 −5.4814E−02  2.1634E−02 −2.8449E−03  2.3387E−04−3.2409E−04 R2 −1.4970E+02 −1.1678E−02 −6.1478E−03 −2.4942E−03 3.6834E−04  1.0173E−03  1.1644E−03  8.7581E−04  2.9457E−04 −3.4252E−04R3  4.3946E+01  7.2797E−03  1.2867E−02  8.3036E−03 −2.7527E−03−5.4646E−03 −2.4849E−03  1.3512E−03  2.0661E−03 −5.4809E−04 R4−4.3066E+02 −5.5015E−02  1.2079E−01 −1.7444E−01  1.1799E−01 −4.4493E−02 1.1804E−02 −2.4659E−03 −1.4893E−03  1.5185E−03 R5 −5.0292E+00−1.4181E−01  2.4346E−01 −3.1675E−01  2.8023E−01 −1.6366E−01  5.6006E−02−6.4497E−03  1.2398E−03 −1.5350E−03 R6  2.0279E+00 −1.9720E−01 2.5182E−01 −3.8638E−01  4.5055E−01 −3.6071E−01  1.5628E−01 −2.2890E−02 1.2492E−03 −2.7959E−03 R7  1.5897E+00 −5.6815E−02  1.2419E−02−3.3482E−02  2.3747E−02 −1.5465E−02  3.8399E−03 −1.0991E−05  5.1480E−04 3.7889E−04 R8  1.9582E+00 −7.9352E−02  4.9561E−02 −6.0295E−02 2.7596E−02  1.1633E−02 −1.5847E−02  4.7735E−03  8.8614E−05 −2.5266E−04R9 −5.1084E−01  6.8066E−02  5.0051E−04 −9.9157E−02  1.3330E−01−6.2386E−02  1.0965E−02 −1.9430E−04  7.2179E−05 −9.1781E−05 R10−4.8862E−02  8.6685E−02 −9.3639E−02  7.5910E−02 −3.6161E−02  1.1841E−02−1.7586E−03  5.8686E−05 −5.7505E−05  1.6483E−05 R11 −1.4629E+01 7.1407E−02 −1.1590E−01  6.5309E−02 −2.8182E−02  6.3253E−03 −4.9332E−04−3.2324E−06 −5.6249E−07  1.3014E−07 R12 −1.9168E+01  5.1263E−02−4.1915E−02  8.6245E−03 −5.6464E−04  1.3833E−05 −3.2257E−06 −3.2023E−08 1.3947E−08  2.7875E−09 R13  5.1730E−01 −2.1474E−01  8.0559E−02−1.4780E−02  1.3995E−03 −3.9249E−05 −4.2155E−06  2.8452E−07  3.6025E−09−2.6840E−10 R14 −7.0362E−01 −1.9129E−01  8.0750E−02 −2.7527E−02 6.1200E−03 −8.2990E−04  6.5102E−05 −2.8365E−06  7.6749E−08 −1.7997E−09

Table 11 and table 12 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 30 according toEmbodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 2 0.715 1.185P1R2 2 0.545 0.975 P2R1 0 0 P2R2 1 1.085 P3R1 1 1.105 P3R2 0 0 P4R1 11.135 P4R2 0 0 P5R1 2 1.025 1.285 P5R2 1 1.145 P6R1 2 0.715 1.735 P6R2 30.885 1.935 2.225 P7R1 2 0.305 1.435 P7R2 2 0.635 2.695

TABLE 12 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 0 P2R1 0 P2R2 0 P3R1 0 P3R2 0 P4R1 0 P4R2 0 P5R10 P5R2 0 P6R1 1 1.135 P6R2 1 1.455 P7R1 2 0.555 2.225 P7R2 2 1.435 3.075

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 436 nm, 486 nm, 546 nm, 588 nm and656 nm after passing the camera optical lens 30 according to Embodiment3. FIG. 12 illustrates field curvature and distortion of light with awavelength of 546 nm after passing the camera optical lens 30 accordingto Embodiment 3.

Table 13 in the following lists values corresponding to the respectiveconditions in this embodiment in order to satisfy the above conditions.The camera optical lens according to this embodiment satisfies the aboveconditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 2.3356 mm. The image height of 1.0H is 3.475 mm. The FOV (fieldof view) is 81.96°. Thus, the camera optical lens has a wide-angle andis ultra-thin. Its on-axis and off-axis chromatic aberrations are fullycorrected, thereby achieving excellent optical characteristics.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment3 f 3.787 3.829 3.877 f1 5.691 6.092 6.454 f2 9.373 9.387 8.409 f3−7.701 −8.981 −7.956 f4 3.851 4.526 4.641 f5 −6.246 −8.656 −10.230 f614.435 17.120 20.548 f7 −5.429 −5.562 −5.579 f12 3.648 3.803 3.766 Fno1.660 1.660 1.660 f3/f4 −2.00 −1.98 −1.71 (R13 + R14)/ 2.12 2.18 2.19(R13 − R14) f1/f 1.50 1.59 1.66

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the spirit and scope of the present disclosure.

What is claimed is:
 1. A camera optical lens, comprising, from an objectside to an image side in sequence: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens,wherein the camera optical lens satisfies following conditions:1.50≤f1/f≤2.50; 1.70≤n3≤2.20; −2.00≤f3/f4≤2.00;1.00≤(R13+R14)/(R13−R14)≤10.00; and 1.70≤n4≤2.20, where f denotes afocal length of the camera optical lens; f1 denotes a focal length ofthe first lens; f3 denotes a focal length of the third lens; f4 denotesa focal length of the fourth lens; n3 denotes a refractive index of thethird lens; n4 denotes a refractive index of the fourth lens; R13denotes a curvature radius of an object side surface of the seventhlens; and R14 denotes a curvature radius of an image side surface of theseventh lens.
 2. The camera optical lens as described in claim 1,wherein the first lens is made of plastic material, the second lens ismade of plastic material, the third lens is made of glass material, thefourth lens is made of glass material, the fifth lens is made of plasticmaterial, the sixth lens is made of plastic material and the seventhlens made of a plastic material.
 3. The camera optical lens as describedin claim 1, further satisfying following conditions: 1.50≤f1/f≤2.08;1.78≤n3≤2.12; −2.00≤f3/f≤0.15; 1.56≤(R13+R14)/(R13−R14)≤6.10; and1.72≤n4≤2.01.
 4. The camera optical lens as described in claim 1,wherein the first lens has a positive refractive power, and comprises anobject side surface being convex in a paraxial region and an image sidesurface being concave in the paraxial region, and the camera opticallens further satisfies following conditions:−3.72≤(R1+R2)/(R1−R2)≤−1.08; and 0.03≤d1/TTL≤0.10, where R1 denotes acurvature radius of the object side surface of the first lens; R2denotes a curvature radius of the image side surface of the first lens;d1 denotes an on-axis thickness of the first lens; and TTL denotes atotal optical length from the object side surface of the first lens toan image plane of the camera optical lens along an optic axis.
 5. Thecamera optical lens as described in claim 4, further satisfyingfollowing conditions: −2.32≤(R1+R2)/(R1−R2)≤−1.35; and 0.05≤d1/TTL≤0.08.6. The camera optical lens as described in claim 1, wherein the secondlens has a positive refractive power, and comprises an object sidesurface being convex in a paraxial region and an image side surfacebeing convex in the paraxial region, and the camera optical lens furthersatisfies following conditions: 1.08≤f2/f≤3.71;−0.34≤(R3+R4)/(R3−R4)≤0.04; and 0.04≤d3/TTL≤0.13, where f2 denotes afocal length of the second lens; R3 denotes a curvature radius of theobject side surface of the second lens; R4 denotes a curvature radius ofthe image side surface of the second lens; d3 denotes an on-axisthickness of the second lens; and TTL denotes a total optical lengthfrom an object side surface of the first lens to an image plane of thecamera optical lens along an optic axis.
 7. The camera optical lens asdescribed in claim 6, further satisfying following conditions:1.74≤f2/f≤2.97; −0.21≤(R3+R4)/(R3−R4)≤−0.05; and 0.07≤d3/TTL≤0.11. 8.The camera optical lens as described in claim 1, wherein the third lenshas a negative refractive power, and comprises an object side surfacebeing convex in a paraxial region and an image side surface beingconcave in the paraxial region, and the camera optical lens furthersatisfies following conditions: −4.96≤f3/f≤−1.36;2.33≤(R5+R6)/(R5−R6)≤8.76; and 0.01≤d5/TTL≤0.04; where R5 denotes acurvature radius of the object side surface of the third lens; R6denotes a curvature radius of the image side surface of the third lens;d5 denotes an on-axis thickness of the third lens; and TTL denotes atotal optical length from an object side surface of the first lens to animage plane of the camera optical lens along an optic axis.
 9. Thecamera optical lens as described in claim 8, further satisfyingfollowing conditions: −2.93≤f3/f≤−1.69; and 3.73≤(R5+R6)/(R5−R6)≤7.01.10. The camera optical lens as described in claim 1, wherein the fourthlens has a positive refractive power, and comprises an object sidesurface being concave in a paraxial region and an image side surfacebeing convex in the paraxial region, and the camera optical lens furthersatisfies following conditions: 0.51≤f4/f≤1.80;0.63≤(R7+R8)/(R7−R8)≤2.13; and 0.06≤d7/TTL≤0.20, where R7 denotes acurvature radius of the object side surface of the fourth lens; R8denotes a curvature radius of the image side surface of the fourth lens;d7 denotes an on-axis thickness of the fourth lens; and TTL denotes atotal optical length from an object side surface of the first lens to animage plane of the camera optical lens along an optic axis.
 11. Thecamera optical lens as described in claim 10, further satisfyingfollowing conditions: 0.81≤f4/f≤1.44; 1.01≤(R7+R8)/(R7−R8)≤1.70; and0.10≤d7/TTL≤0.16.
 12. The camera optical lens as described in claim 1,wherein the fifth lens has a negative refractive power, and comprises anobject side surface being concave in a paraxial region and an image sidesurface being convex in the paraxial region, and the camera optical lensfurther satisfies following conditions: −5.28≤f5/f≤−1.10;−12.53≤(R9+R10)/(R9−R10)≤−2.66; and 0.02≤d9/TTL≤0.09, where f5 denotes afocal length of the fifth lens; R9 denotes a curvature radius of theobject side surface of the fifth lens; R10 denotes a curvature radius ofthe image side surface of the fifth lens; d9 denotes an on-axisthickness of the fifth lens; and TTL denotes a total optical length froman object side surface of the first lens to an image plane of the cameraoptical lens along an optic axis.
 13. The camera optical lens asdescribed in claim 12, further satisfying following conditions:−3.30≤f5/f≤1.37; −7.83≤(R9+R10)/(R9−R10)≤3.33; and 0.04≤d9/TTL≤0.07. 14.The camera optical lens as described in claim 1, wherein the sixth lenshas a positive refractive power, and comprises an object side surfacebeing convex in a paraxial region and an image side surface beingconcave in the paraxial region, and the camera optical lens furthersatisfies following conditions: 1.91≤f6/f≤7.95;−28.55≤(R11+R12)/(R11−R12)≤−5.07; and 0.05≤d11/TTL≤0.15, where f6denotes a focal length of the sixth lens; R11 denotes a curvature radiusof the object side surface of the sixth lens; R12 denotes a curvatureradius of the image side surface of the sixth lens; d11 denotes anon-axis thickness of the sixth lens; and TTL denotes a total opticallength from an object side surface of the first lens to an image planeof the camera optical lens along an optic axis.
 15. The camera opticallens as described in claim 14, further satisfying following conditions:3.05≤f6/f≤6.36; −17.84≤(R11+R12)/(R11−R12)≤−6.34; and 0.08≤d11/TTL≤0.12.16. The camera optical lens as described in claim 1, wherein the seventhlens has a negative refractive power, and the object side surface of theseventh lens is convex in a paraxial region and the image side surfaceof the seventh lens is concave in the paraxial region, and the cameraoptical lens further satisfies following conditions: −2.91≤f7/f≤−0.96;and 0.06≤d13/TTL≤0.19, where f7 denotes a focal length of the seventhlens; d13 denotes an on-axis thickness of the seventh lens; and TTLdenotes a total optical length from an object side surface of the firstlens to an image plane of the camera optical lens along an optic axis.17. The camera optical lens as described in claim 16, further satisfyingfollowing conditions: −1.82≤f7/f≤−1.19; and 0.09≤d13/TTL≤0.15.
 18. Thecamera optical lens as described in claim 1, wherein the total opticallength TTL of the camera optical lens is smaller than or equal to 5.89mm.
 19. The camera optical lens as described in claim 18, wherein thetotal optical length TTL of the camera optical lens is smaller than orequal to 5.62 mm.
 20. The camera optical lens as described in claim 1,wherein an F number of the camera optical lens is smaller than or equalto 1.71.